So, in IKIMASU (to go), you change KI to KU, and get IKU. There are two irregular verbs that don’t fit the above patterns. They are KIMASU (to come), and SHIMASU (to do). KIMASU becomes KURU ...
There are ten irregular verbs in Gaelic. It is worthwhile mastering these because they are very common in everyday speech. Below is a table outlining the root, verbal noun, infinitive, past tense ...